CN102105682A - Method of controlling a variable speed wind turbine generator - Google Patents
Method of controlling a variable speed wind turbine generator Download PDFInfo
- Publication number
- CN102105682A CN102105682A CN2009801287947A CN200980128794A CN102105682A CN 102105682 A CN102105682 A CN 102105682A CN 2009801287947 A CN2009801287947 A CN 2009801287947A CN 200980128794 A CN200980128794 A CN 200980128794A CN 102105682 A CN102105682 A CN 102105682A
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- CN
- China
- Prior art keywords
- speed
- frequency
- generator
- limit
- percentage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000001360 synchronised effect Effects 0.000 claims description 9
- 238000005457 optimization Methods 0.000 claims description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 4
- 240000006909 Tilia x europaea Species 0.000 description 4
- 235000011941 Tilia x europaea Nutrition 0.000 description 4
- 239000004571 lime Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 102100029469 WD repeat and HMG-box DNA-binding protein 1 Human genes 0.000 description 1
- 101710097421 WD repeat and HMG-box DNA-binding protein 1 Proteins 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
- F03D7/0284—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power in relation to the state of the electric grid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
- F03D9/255—Wind motors characterised by the driven apparatus the apparatus being an electrical generator connected to electrical distribution networks; Arrangements therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/337—Electrical grid status parameters, e.g. voltage, frequency or power demand
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
In a method of controlling a variable speed wind turbine generator connected to a power grid and comprising means for controlling the generator speed, said method comprises the steps of - measuring the frequency f of the power grid, - controlling the speed of the generator for optimizing the power delivered to the power grid, - setting limits for the generator speed. The setting of the limits for the generator speed is performed in dependency of the measured frequency of the power grid. This provides a dynamical set of limits providing improved possibilities of optimizing the power production.
Description
Technical field
The present invention relates to be connected to the variable speed wind turbine generator of electrical network, more specifically, the present invention relates to the control of this wind turbine generator when mains frequency departs from rated frequency.
Background technique
Usually, this wind turbine can be controlled to provide peak output to electrical network aspect alternator speed, and in order to limit the load on turbine assembly such as transducer, transmission system, the generator etc., has applied minimum and maximum speed limit.
US5729118 discloses a kind of speed change induction generator with controlled excitation frequency, and wherein slip frequency remains unchanged when the variation of mains frequency.
Summary of the invention
On the basis of existing technology, purpose of the present invention just provides a kind of method of controlling the variable speed wind turbine generator, utilizes this method can be optimized generating by optimizing alternator speed.Preferably, alternator speed is controlled according to wind speed, and this control is controlled by the pitch of wind turbine blade and carried out.Further, hope can be provided with dynamic limit to the speed of generator, and described dynamic limit is considered the possible variation of mains frequency, even its bigger variation relatively.This target realizes that based on described method according to the method for record of the present invention, it also comprises the feature of characteristic proposition of claim 1.Be provided with by this, the limit of alternator speed dynamically adapts to mains frequency, thus, the optimization of the power of carrying by generator mains frequency change during stand appropriate restriction.This method preferred embodiment represents that in the dependent claims its advantage is clearly described in detail in following the present invention and drawn.
Description of drawings
In ensuing detailed description, with reference to the present invention being carried out being explained in further detail with reference to accompanying drawing and according to the preferred embodiment of the inventive method, wherein,
Fig. 1 has shown that schematically mains frequency deviation delta f is defined as surveying mains frequency and deducts specified mains frequency according to the chart of the alternator speed of a preferred embodiment of this method restriction as the function of mains frequency deviation delta f; And
Fig. 2 has schematically shown according to the chart of the alternator speed of another preferred embodiment of the application restriction as the function between the mains frequency deviation delta f.
Embodiment
As above said, the objective of the invention is and to revise dynamically or to adjust the upper and lower of alternator speed according to the mains frequency deviation.Shown in corresponding accompanying drawing, can carry out at interval with different time this dynamic correction of the minimum and maximum speed of generator.As Fig. 1, if with the deviation of rated frequency less than ± 1%, promptly respectively for specified mains frequency 50Hz and 60Hz, respective bins be respectively 49.5Hz to 50.5Hz or 59.4Hz to 60.6Hz, the minimum and maximum speed of generator is configured to fixed value.The purpose that above-mentioned dead band is set is as long as very small just the avoiding of frequency departure revised, and has only as the enough great talents of frequency departure and revises.
For the generator of 50Hz, the representative value of the fixed value of upper and lower will be a synchronous speed, and 1500rpm for example adds 12% and subtract 16.7% respectively.As shown in Figure 1, limes superiors speed further is limited in 1680rpm, to avoid hypervelocity.This can regard the horizontal component of the limes superiors on about 1.2Hz mains frequency deviation as.Further, and for example shown in Figure 1, limes superiors can approximately-extend to the alternator speed of 1580prm under the deviation of 1.8Hz.Limes superiors is fixed on about 1580prm and is introduced into, to prevent that generator torque obviously increases when the mains frequency negative deviation.
For low limits, Fig. 1 has shown the constant percentage deviation with the synchronous speed that calculates based on the deviation mains frequency.Therefore, except from 49.5 to 50.5Hz interval, low limits is limited to the synchronous speed that calculates based on the deviation mains frequency and subtracts 16.7%.
In the wind turbine of some type, preferably, that is, move all the time to be lower than the speed of synchronous speed operate generator subsynchronously.Reason may be different for this reason, for example, due to the fact that, the transducer back-to-back that is connected between rotor winding and the electrical network may be designed to only at a direction transmission power.
In this case, the speed limit up and down of generator as shown in Figure 2, wherein, for-3.6Hz and-frequency departure between the 0.6Hz, the synchronous speed that generator speed remains on calculating subtracts below 2.3%; For-0.6Hz and+mains frequency deviation between the 3.6Hz, generator speed remains below synchronous speed-2.3%.Also as above shown in Figure 1, the mains frequency deviation between-6% and-1% and+1% to+6% between the time, the limit inferior of alternator speed is the synchronous speed-16.7% of calculating; The mains frequency deviation-1% and+1% between the time, the limit inferior of alternator speed is that synchronous speed subtracts 16.7%.
Generator unit stator can be that star and triangular arrangement are connected to electrical network with two kinds of different configurations.For these two kinds of configurations, different speed and Power Limitation are all arranged, example can be seen in Fig. 1 and Fig. 2, usually find, for star and triangular arrangement, maximum speed limit is consistent, but the minimum speed limit of triangular arrangement is less than the minimum speed limit of star like arrangement, as shown in the figure.
Claims (9)
1. method of controlling the variable speed wind turbine generator, described variable speed wind turbine generator is connected to electrical network and comprises the device that is used to control alternator speed, and described method comprises the steps:
Measure mains frequency f;
The control alternator speed is so that be transferred to the power optimization of electrical network;
Alternator speed is provided with the limit;
Wherein, alternator speed being provided with the limit is to carry out according to the measuring frequency of electrical network.
2. method according to claim 1, wherein, described basis is provided with as follows:
A) as long as measuring frequency in predetermined threshold, adopts one group of normal fixed limit of alternator speed;
B) need only measuring frequency outside described predetermined threshold, the speed limit of generator is adjusted with respect to described fixed limit.
3. method according to claim 2 wherein, needs only measuring frequency outside described predetermined threshold, and described basis is with speed limit about the percentage adjustment identical with the frequency deviation f of mains frequency and specified mains frequency.
4. according to claim 2 or 3 described methods, wherein, described predetermined threshold is defined as the percentage that departs from rated frequency, and the described percentage that departs from is preferably in ± 0-6% interval.
5. method according to claim 4, wherein, described percentage is ± 1%.
6. according to each described method of claim 2-5, wherein, one group of normal fixed limit of described alternator speed is configured to provide the interval that is centered around the synchronous speed under the rated frequency.
7. according to each described method of claim 1-6, wherein, generator speed is further by fixing maximum generation motor speed restriction.
8. according to each described method of claim 1-7, wherein,, for example be set at certain percentage deviation, described generator and electrical network disconnection with rated frequency as long as mains frequency surpasses described predetermined threshold.
9. according to each described method of claim 1-8, wherein, as long as mains frequency and rated frequency depart from above predetermined percentage, described generator disconnects.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13571008P | 2008-07-22 | 2008-07-22 | |
| DKPA200801033 | 2008-07-22 | ||
| DKPA200801033 | 2008-07-22 | ||
| US61/135,710 | 2008-07-22 | ||
| PCT/IB2009/052947 WO2010010476A1 (en) | 2008-07-22 | 2009-07-07 | Method of controlling a variable speed wind turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102105682A true CN102105682A (en) | 2011-06-22 |
| CN102105682B CN102105682B (en) | 2015-08-05 |
Family
ID=41399289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200980128794.7A Active CN102105682B (en) | 2008-07-22 | 2009-07-07 | Control the method for variable speed wind turbine generator |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9163610B2 (en) |
| EP (1) | EP2307714A1 (en) |
| CN (1) | CN102105682B (en) |
| AU (1) | AU2009275236B2 (en) |
| BR (1) | BRPI0911005A2 (en) |
| WO (1) | WO2010010476A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018049676A1 (en) * | 2016-09-19 | 2018-03-22 | General Electric Company | Wind turbine and method for controlling wind turbine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009037238B3 (en) * | 2009-08-12 | 2010-12-09 | Repower Systems Ag | Wind energy plant with variable speed characteristic |
| EP2719893B1 (en) * | 2012-10-09 | 2017-01-04 | ALSTOM Renewable Technologies | Method of operating a variable speed wind turbine |
| KR101318124B1 (en) * | 2013-06-24 | 2013-10-16 | 전북대학교산학협력단 | Inertial control method for wind turbine |
| US11378059B2 (en) | 2019-11-11 | 2022-07-05 | General Electric Company | System and method for controlling a generator of a wind turbine using electrical current |
| US11411403B2 (en) * | 2020-12-14 | 2022-08-09 | Vestas Wind Systems A/S | Controlling power distribution at deadband states |
| WO2024091249A1 (en) * | 2022-10-28 | 2024-05-02 | General Electric Renovables España, S.L. | System and method for extending the operating speed threshold of a grid-forming inverter-based resource |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688095A2 (en) * | 1994-06-17 | 1995-12-20 | Kabushiki Kaisha Toshiba | Variable speed generator-motor apparatus capable of improving accuracy of power system |
| CN1894837A (en) * | 2003-04-09 | 2007-01-10 | 通用电气公司 | Wind farm and method for operating same |
| US20070069522A1 (en) * | 2005-09-29 | 2007-03-29 | General Electric Company | Wind turbine and method for operating same |
| CN101109363A (en) * | 2006-07-22 | 2008-01-23 | 陈忠维 | Multilevel variable velocity wind power generator |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4700081A (en) * | 1986-04-28 | 1987-10-13 | United Technologies Corporation | Speed avoidance logic for a variable speed wind turbine |
| DE10022974C2 (en) | 2000-05-11 | 2003-10-23 | Aloys Wobben | Method for operating a wind energy plant and wind energy plant |
| DE10134883A1 (en) * | 2001-07-18 | 2003-01-30 | Abb Research Ltd | Method and device for speed-adjustable power electronic control of a gearless wind turbine |
| US7355294B2 (en) * | 2006-05-22 | 2008-04-08 | General Electric Company | Method and system for wind turbine blade movement |
| EP1914420B1 (en) | 2006-10-19 | 2015-08-12 | Siemens Aktiengesellschaft | Wind energy installation and method of controlling the output power from a wind energy installation |
| DK1914419T3 (en) * | 2006-10-19 | 2015-12-21 | Siemens Ag | Wind energy installation and method for controlling the output power from a wind power installation |
| JP4501958B2 (en) * | 2007-05-09 | 2010-07-14 | 株式会社日立製作所 | Wind power generation system and control method thereof |
| DE102008028809B3 (en) * | 2008-06-19 | 2010-04-01 | Repower Systems Ag | Control circuit and method for inverters of wind turbines |
| ES2561842T3 (en) * | 2009-06-29 | 2016-03-01 | Vestas Wind Systems A/S | Wind turbine that provides support to the distribution network |
| US8736094B2 (en) * | 2012-01-20 | 2014-05-27 | Mitsubishi Heavy Industries, Ltd. | Wind-turbine-generator control system, wind turbine generator, wind farm, and wind-turbine-generator control method |
-
2009
- 2009-07-07 CN CN200980128794.7A patent/CN102105682B/en active Active
- 2009-07-07 BR BRPI0911005A patent/BRPI0911005A2/en not_active Application Discontinuation
- 2009-07-07 WO PCT/IB2009/052947 patent/WO2010010476A1/en active Application Filing
- 2009-07-07 US US13/003,935 patent/US9163610B2/en active Active
- 2009-07-07 AU AU2009275236A patent/AU2009275236B2/en not_active Ceased
- 2009-07-07 EP EP09786530A patent/EP2307714A1/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0688095A2 (en) * | 1994-06-17 | 1995-12-20 | Kabushiki Kaisha Toshiba | Variable speed generator-motor apparatus capable of improving accuracy of power system |
| CN1894837A (en) * | 2003-04-09 | 2007-01-10 | 通用电气公司 | Wind farm and method for operating same |
| US20070069522A1 (en) * | 2005-09-29 | 2007-03-29 | General Electric Company | Wind turbine and method for operating same |
| CN101109363A (en) * | 2006-07-22 | 2008-01-23 | 陈忠维 | Multilevel variable velocity wind power generator |
Non-Patent Citations (1)
| Title |
|---|
| C. FELTES AND I. ERLICH, SENIOR MEMBER, IEEE: "Variable Frequency Operation of DFIG based Wind Farms connected to the Grid through VSC-HVDC Link", 《POWER ENGINEERING SOCIETY GENERAL MEETING》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018049676A1 (en) * | 2016-09-19 | 2018-03-22 | General Electric Company | Wind turbine and method for controlling wind turbine |
| US11268494B2 (en) | 2016-09-19 | 2022-03-08 | General Electric Company | Wind turbine and method for controlling wind turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| US20110175352A1 (en) | 2011-07-21 |
| AU2009275236A1 (en) | 2010-01-28 |
| US9163610B2 (en) | 2015-10-20 |
| EP2307714A1 (en) | 2011-04-13 |
| CN102105682B (en) | 2015-08-05 |
| WO2010010476A1 (en) | 2010-01-28 |
| BRPI0911005A2 (en) | 2015-10-06 |
| AU2009275236B2 (en) | 2014-05-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |